15642854863 has 4 divisors (see below), whose sum is σ = 15647988400. Its totient is φ = 15637721328.

The previous prime is 15642854839. The next prime is 15642854891. The reversal of 15642854863 is 36845824651.

15642854863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15642854863 - 2¹³ = 15642846671 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15642854863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15642854893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2562195 + ... + 2568292.

It is an arithmetic number, because the mean of its divisors is an integer number (3911997100).

Almost surely, 2^15642854863 is an apocalyptic number.

15642854863 is a deficient number, since it is larger than the sum of its proper divisors (5133537).

15642854863 is an equidigital number, since it uses as much as digits as its factorization.

15642854863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5133536.

The product of its digits is 5529600, while the sum is 52.

The spelling of 15642854863 in words is "fifteen billion, six hundred forty-two million, eight hundred fifty-four thousand, eight hundred sixty-three".